Can we get rid of LA152.transportation and L252.transportation?

[russellhz]

Don't seem to be used anymore

[pkyle]

These were left in, in case we ever wanted to revive "MiniCAM" which would hypothetically have scaled-down representations of the end-use sectors, ideally among others. The same logic would apply to all of the following files, which could be removed in a single commit if we want:

inst/extdata/energy/A42.*.csv
inst/extdata/energy/A52.*.csv
R/zchunk_LA142.building_agg.R
R/zchunk_LA152.transportation.R
R/zchunk_L242.building_agg.R
R/zchunk_L242.Bld_Inc_Elas_scenarios.R
R/chunk_L252.transportation.R
R/zchunk_L252.Trn_Inc_Elas_scenarios.R
R/zchunk_batch_bld_agg_xml.R

The "MiniCAM" end use sectors capability hasn't been tested in a LONG time, and probably doesn't work anyway. The aggregate transportation XML files don't even get built anymore. Fine by me to get rid of them all.